The printer weighs 4,630 pounds (without its large metal storage box) and heats aluminum up to 1,562 degrees.
The material it prints with is aluminum, and it consumes aluminum wire as the raw material.
“The wire gets fed into the heated print head. The print head gets to 850 Celsius [1,564 Fahrenheit], which essentially melts the wire, so you get this liquid pool of metal,” says Tali Rosman, the head of Elem Additive at Xerox. “And then we activate pulses on the print head, and eject [metal], drop by drop, to build the part.”The pulses that expel the liquid metal are magnetic. The print head doesn’t move, but a plate beneath it does, allowing a custom part to take shape.
One variable on Rosman’s radar is vibrations from the ship, which might affect the printing process. The next concern is “the climate” the printer will experience while onboard, in terms of salty air or even saltwater—although the printer will remain protected within its large box and is inside the ship itself. “But in the interest of being fully transparent, since nobody’s done this before, we don’t know,” Rosman says.
Printers that can create three-dimensional objects can lead to “greater self-sufficiency for Navy ships,” notes Commander Arlo Abrahamson, a Naval spokesperson, via email. He says that the metal items that have been printed thus far on theare “Common Valve Hand Wheels, Antenna Seal Band Brackets, Fire Hose Spanner Wrenches,” and more.produced non-metal parts, and created some 735 items during a deployment between 2018 and 2019.
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